#filter out empty strings in a sting list

 list = [x for x in list if x.strip()!='']

 with open("/path/to/file") as f:

     for line in f:

         print line

 f = open("/path/tofile", 'w')

 for e in aList:

     f.write(e + "\n")f.close()

 sentence = "this is a test, not testing."

 it = re.finditer('\\btest\\b', sentence)

 for match in it:

     print "match position: " + str(match.start()) +"-"+ str(match.end())

 m = re.search('\d+-\d+', line) #search 123-123 like strings

 if m:

     current = m.group(0)

 db = MySQLdb.connect("localhost","username","password","dbname")

 cursor = db.cursor()

 sql = "select Column1,Column2 from Table1"

 cursor.execute(sql)

 results = cursor.fetchall()

 for row in results:

     print row[0]+row[1] db.close()

 theList = ["a","b","c"]

 joinedString = ",".join(theList)

 targetList = list(set(targetList))

 targetList = [v for v in targetList if not v.strip()=='']

 # or

 targetList = filter(lambda x: len(x)>0, targetList)

 anotherList.extend(aList)

 for k,v in aDict.iteritems():

     print k+v

 if any(x in targetString for x in aList):

     print "true"